The temperatures in Vallejo in May are comfortable with low of 50°F and and high up to 71°F.
The wather in Vallejo in May can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Vallejo in May 2025.
If you’re planning to visit Vallejo in the near future, we highly recommend that you review the 14 day weather forecast for Vallejo before you arrive.
Temperatures
71° / 50°
Rainy Days
1
Snowy Days
0
Dry Days
30
Rainfall
0.51
in
Sun Hours
11.2
Hrs
